CVE-2022-44628 in 4ECPS Web Forms Plugin
Summary
by MITRE • 11/04/2022
Auth. (admin+) Stored Cross-Site Scripting (XSS) vulnerability in JumpDEMAND Inc. 4ECPS Web Forms plugin <= 0.2.17 on WordPress.
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Analysis
by VulDB Data Team • 11/04/2022
The CVE-2022-44628 vulnerability represents a critical stored cross-site scripting flaw within the 4ECPS Web Forms plugin for WordPress, specifically affecting versions up to and including 0.2.17. This vulnerability resides in the administrative interface of the plugin, making it particularly dangerous as it requires only administrative privileges to exploit. The flaw allows authenticated users with administrator-level access or higher to inject malicious scripts into the plugin's form handling mechanisms, which then execute in the context of other administrators or users who view the affected content. The vulnerability is classified as a stored XSS attack because the malicious payload is permanently stored on the server and executed whenever users access the compromised pages, rather than being reflected in a single request.
The technical implementation of this vulnerability stems from inadequate input validation and output sanitization within the plugin's form processing logic. When administrators create or modify web forms through the WordPress admin panel, the plugin fails to properly escape or filter user-supplied data before storing it in the database. This allows attackers with administrative access to inject malicious JavaScript code into form fields, hidden inputs, or other configurable elements. The stored payload executes whenever the form data is rendered back to users, particularly in administrative contexts where form submissions are displayed or processed. This vulnerability directly maps to CWE-79, which defines Cross-Site Scripting as the failure to properly escape output, and represents a specific instance of CWE-80, which addresses the improper neutralization of script-related HTML tags in a web page.
The operational impact of this vulnerability extends beyond simple data theft or defacement, as it provides attackers with the ability to escalate privileges and maintain persistent access to compromised WordPress installations. An attacker with administrator access can leverage this vulnerability to execute arbitrary JavaScript code in the context of other administrators' browsers, potentially enabling session hijacking, credential theft, or even full system compromise. The attack chain typically involves an attacker gaining administrative access through other means, then exploiting this stored XSS vulnerability to establish a persistent backdoor or to steal session cookies from other administrators. This vulnerability also aligns with ATT&CK technique T1566, which covers social engineering through malicious content, and T1071.001, which involves application layer protocol usage for command and control communications.
Mitigation strategies for CVE-2022-44628 should prioritize immediate plugin updates to versions that address the stored XSS vulnerability, as the vendor has released patches to resolve this issue. Organizations should implement strict input validation and output sanitization measures for all user-supplied data within the WordPress ecosystem, particularly in administrative interfaces where privileged users can submit content. Network segmentation and monitoring should be implemented to detect unusual administrative activities or JavaScript injection attempts. The principle of least privilege should be enforced, limiting administrative access to only those users who absolutely require it. Additionally, implementing Content Security Policy headers can provide an additional layer of defense against XSS attacks by restricting the sources from which scripts can be executed. Regular security audits of WordPress plugins and themes, along with maintaining up-to-date security monitoring tools, are essential practices to prevent exploitation of similar vulnerabilities in the future.